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    Subject[PATCH] Add switch for dock events
    Add a switch to signal dock events to userspace.

    Signed-off-by: Matthew Garrett <mjg@redhat.com>

    ---

    I've done this as an input event rather than anything else since there
    isn't necessarily a terribly coherent concept of a dock device. HPs (for
    example) don't use ACPI for docking - the dock is simply an extension of
    devices that are already on the system. We can't sensibly create a dock
    platform device and then generate uevents on it. Doing it this way lets
    us standardise on a way to send docking events to userspace, which lets
    desktops do things like automatically expand onto external monitors when
    the system is docked.

    diff --git a/include/linux/input.h b/include/linux/input.h
    index 28a094f..0bc55ee 100644
    --- a/include/linux/input.h
    +++ b/include/linux/input.h
    @@ -638,6 +638,7 @@ struct input_absinfo {
    #define SW_TABLET_MODE 0x01 /* set = tablet mode */
    #define SW_HEADPHONE_INSERT 0x02 /* set = inserted */
    #define SW_RADIO 0x03 /* set = radio enabled */
    +#define SW_DOCK 0x04 /* set = plugged into dock */
    #define SW_MAX 0x0f
    #define SW_CNT (SW_MAX+1)

    --
    Matthew Garrett | mjg59@srcf.ucam.org

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